.father {
  width: 3rem;
  height: 2rem;
  border: 1px solid #000;
  background-image: linear-gradient(to bottom, skyblue 0%, pink 100%);
}
.father .son {
  line-height: 2rem;
  height: 50%;
  text-align: center;
}
.father .son a {
  color: pink;
  text-decoration: none;
  font-size: 0.3rem;
}
.father .son a:hover {
  color: purple;
  font-size: 0.6rem;
}
